Rain is probably the last thing people of the Coromandel and South Waikato want to think about right now!

But Environment Waikato is hoping local residents will do just that to help ensure damage from future catastrophic floods can be minimised.

The Regional Council would like to hear from residents of Tirau, Tokoroa, Putaruru and the Coromandel who may have recorded rainfall levels during last week's storm event. If so, they'd like to know about it – particularly information on when the heaviest rainfall episodes occurred.

Spokesperson Adam Munro said the information will be ‘hugely helpful’ in helping Environment Waikato assess the areas and extent of flooding.

"This sort of information will help us compare data with previous flood events and work with the community and local councils to minimise the impacts of any future storms. If we know the areas of greatest risk, we can plan accordingly," Mr Munro said.

Environment Waikato would welcome rainfall information from anyone in the affected areas, he said.

People with information are invited to call Mr Munro on Environment Waikato's Freephone, 0800 800 401.